CVE-2022-37454

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 7.4% (94th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Trending — 3 sources updated this weekElevated
9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 7.4%CVSS: 9.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

The Keccak XKCP SHA-3 reference implementation before fdc6fef has an integer overflow and resultant buffer overflow that allows attackers to execute arbitrary code or eliminate expected cryptographic properties. This occurs in the sponge function interface.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
75
EG Risk 75/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
7.4%
EPSS %ILE
94th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
7.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-20). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

October 21, 2022

Last Modified

October 14, 2026

Advisory Details (10)

Auto-updated Oct 15, 2026
🔬 Proof of concept available. Patch available. Sources: github.
Web page

A Vulnerability in Implementations of SHA-3, Shake, EdDSA | Hacker News

https://news.ycombinator.com/item?id=35050307
Web page

SHA-3 Buffer Overflow | Hacker News

https://news.ycombinator.com/item?id=33281106
Web page🟡 PoC Available

SHA-3 Buffer Overflow – Nicky Mouha

https://mouha.be/sha-3-buffer-overflow/
Web page

[SECURITY] Fedora 35 Update: php-8.0.25-1.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMIEXLMTW5GO36HTFFWIPB3OHZXCT3G4/
Web page

[SECURITY] Fedora 36 Update: php-8.1.12-1.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3ALQ6BDDPX5HU5YBQOBMDVAA2TSGDKIJ/
Web pageMentions a patch (unverified)

[SECURITY] [DLA 3175-1] python3.7 security update

https://lists.debian.org/debian-lts-announce/2022/11/msg00000.html
Web pageMentions a patch (unverified)

[SECURITY] [DLA 3174-1] pysha3 security update

https://lists.debian.org/debian-lts-announce/2022/10/msg00041.html
GitHub advisoryMentions a patch (unverified)

Buffer overflow in sponge queue functions · Advisory · XKCP/XKCP · GitHub

https://github.com/XKCP/XKCP/security/advisories/GHSA-6w4m-2xhg-2658
Web page

A Vulnerability in Implementations of SHA-3, SHAKE, EdDSA, and Other NIST-Approved Algorithms

https://eprint.iacr.org/2023/331

Patch Availability(12)

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(14 across 9 ecosystems)
Debian:11(4)
PackageVulnerable rangeFix by version rangeDependents
php7.47.4.21-1+deb11u1, 7.4.25-1+deb11u1, 7.4.26-1, 7.4.28-1+deb11u1, 7.4.30-1+deb11u1
  • every version up to 7.4.33-1+deb11u1: fixed in 7.4.33-1+deb11u1
—
pypy37.3.5+dfsg-2, 7.3.5+dfsg-2+deb11u1
  • every version up to 7.3.5+dfsg-2+deb11u2: fixed in 7.3.5+dfsg-2+deb11u2
—
pysha31.0.2-4.1
  • every version up to 1.0.2-4.1+deb11u1: fixed in 1.0.2-4.1+deb11u1
—
python3.93.9.2-1, 3.9.2-1+deb11u1, 3.9.2-1+deb11u2, 3.9.2-1+deb11u3
  • every version up to 3.9.2-1+deb11u4: fixed in 3.9.2-1+deb11u4
—
Debian:10(3)
PackageVulnerable rangeFix by version rangeDependents
php7.37.3.10-1 ... 7.3.9-1~deb10u1 (16 versions)
  • every version up to 7.3.31-1~deb10u2: fixed in 7.3.31-1~deb10u2
—
pysha31.0.2-2
  • every version up to 1.0.2-2+deb10u1: fixed in 1.0.2-2+deb10u1
—
python3.73.7.3-2, 3.7.3-2+deb10u1, 3.7.3-2+deb10u2, 3.7.3-2+deb10u3
  • every version up to 3.7.3-2+deb10u4: fixed in 3.7.3-2+deb10u4
—
Alpine:v3.16(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.10.9-r0: fixed in 3.10.9-r0
—
Alpine:v3.17(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.10.9-r0: fixed in 3.10.9-r0
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
pypy3—
  • every version up to 7.3.9+dfsg-5: fixed in 7.3.9+dfsg-5
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
pypy3—
  • every version up to 7.3.9+dfsg-5: fixed in 7.3.9+dfsg-5
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
pypy3—
  • every version up to 7.3.9+dfsg-5: fixed in 7.3.9+dfsg-5
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
pysha30.1 ... 1.0b1 (10 versions)
  • every version through 1.0.2: no fix on record
—
RubyGems(1)
PackageVulnerable rangeFix by version rangeDependents
sha30.1.0 ... 1.0.4 (11 versions)
  • every version up to 1.0.5: fixed in 1.0.5
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(8)

Data Freshness Timeline

(refreshed 21× in last 7d / 50× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 96 of 214 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 4 repeat rows among the latest 100 are merged into the row they repeat. The 118 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-21 16:29 UTCEPSS rescoreEPSS 7.4% · 94th percentile
  2. 2026-10-21 14:59 UTCEG score recompute
  3. 2026-10-21 14:59 UTCVendor advisory
  4. 2026-10-20 16:29 UTCEPSS rescoreEPSS 7.4% · 94th percentile
  5. 2026-10-20 16:26 UTCVendor advisory
  6. 2026-10-19 17:55 UTCEG score recompute
  7. 2026-10-19 17:55 UTCVendor advisory
  8. 2026-10-19 16:28 UTCEPSS rescoreEPSS 7.4% · 94th percentile
  9. 2026-10-18 20:08 UTCEG score recompute
  10. 2026-10-18 20:08 UTCVendor advisory
  11. 2026-10-18 16:28 UTCEPSS rescoreEPSS 7.4% · 94th percentile
  12. 2026-10-18 08:30 UTCEG score recompute
  13. 2026-10-17 22:22 UTCEG score recompute
  14. 2026-10-17 22:22 UTCVendor advisory
  15. 2026-10-17 16:29 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  16. 2026-10-17 00:36 UTCEG score recompute
  17. 2026-10-17 00:36 UTCVendor advisory
  18. 2026-10-16 16:35 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  19. 2026-10-16 00:19 UTCEG score recompute
  20. 2026-10-16 00:19 UTCVendor advisory
  21. 2026-10-15 16:28 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  22. 2026-10-14 18:25 UTCVendor advisory
  23. 2026-10-14 17:35 UTCEG score recompute
  24. 2026-10-14 17:35 UTCVendor advisory
  25. 2026-10-14 16:29 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
Show 71 more
  1. 2026-10-13 16:29 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  2. 2026-10-13 16:07 UTCVendor advisory
  3. 2026-10-12 18:15 UTCEG score recompute
  4. 2026-10-12 18:15 UTCVendor advisory
  5. 2026-10-12 16:30 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  6. 2026-10-11 23:13 UTCEG score recompute
  7. 2026-10-11 13:44 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  8. 2026-10-10 19:56 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  9. 2026-10-09 20:04 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  10. 2026-10-08 16:40 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  11. 2026-10-07 23:45 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  12. 2026-10-06 15:14 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  13. 2026-10-05 17:40 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  14. 2026-10-04 23:19 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  15. 2026-10-03 14:23 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  16. 2026-10-02 16:23 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  17. 2026-10-01 19:47 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  18. 2026-09-30 16:01 UTCEG score recompute
  19. 2026-09-30 15:00 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  20. 2026-09-29 15:16 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  21. 2026-09-27 13:42 UTCEPSS rescoreEPSS 5.8% · 92nd percentile
  22. 2026-09-26 00:22 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  23. 2026-09-24 14:00 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  24. 2026-09-24 07:19 UTCOSV refresh
  25. 2026-09-22 14:45 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  26. 2026-09-20 20:13 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  27. 2026-09-19 15:38 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  28. 2026-09-17 19:24 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  29. 2026-09-16 14:05 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  30. 2026-09-15 03:07 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  31. 2026-09-12 14:57 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  32. 2026-09-11 14:50 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  33. 2026-09-11 09:33 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  34. 2026-09-08 21:57 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  35. 2026-09-07 15:58 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  36. 2026-09-06 13:45 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  37. 2026-09-05 15:25 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  38. 2026-09-05 00:59 UTCOSV refresh
  39. 2026-09-04 13:57 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  40. 2026-09-04 05:04 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  41. 2026-09-02 14:09 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  42. 2026-09-01 13:51 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  43. 2026-08-30 19:14 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  44. 2026-08-30 01:19 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  45. 2026-08-28 21:38 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  46. 2026-08-27 14:22 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  47. 2026-08-26 14:43 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  48. 2026-08-25 13:46 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  49. 2026-08-24 14:13 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  50. 2026-08-23 00:17 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  51. 2026-08-21 23:46 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  52. 2026-08-20 22:52 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  53. 2026-08-19 17:01 UTCEPSS rescoreEPSS 5.4% · 92nd percentile
  54. 2026-08-18 13:45 UTCEPSS rescoreEPSS 5.4% · 92nd percentile
  55. 2026-08-18 12:02 UTCOSV refresh
  56. 2026-08-17 13:44 UTCEPSS rescoreEPSS 5.4% · 92nd percentile
  57. 2026-08-16 14:53 UTCEPSS rescoreEPSS 5.4% · 92nd percentile
  58. 2026-08-16 02:11 UTCEPSS rescoreEPSS 5.4% · 92nd percentile
  59. 2026-08-15 01:27 UTCEPSS rescoreEPSS 5.4% · 91st percentile
  60. 2026-08-13 21:58 UTCEPSS rescoreEPSS 5.4% · 91st percentile
  61. 2026-08-12 13:48 UTCEPSS rescoreEPSS 5.4% · 91st percentile
  62. 2026-08-11 13:39 UTCEPSS rescoreEPSS 5.4% · 91st percentile
  63. 2026-08-10 14:08 UTCEPSS rescoreEPSS 5.4% · 91st percentile
  64. 2026-08-09 13:44 UTCEPSS rescoreEPSS 5.4% · 91st percentile
  65. 2026-08-08 16:34 UTCEPSS rescoreEPSS 5.4% · 91st percentile
  66. 2026-08-07 16:24 UTCEPSS rescoreEPSS 5.4% · 91st percentile
  67. 2026-08-06 13:44 UTCEPSS rescoreEPSS 5.4% · 91st percentile
  68. 2026-08-05 19:15 UTCEPSS rescoreEPSS 5.4% · 91st percentile
  69. 2026-08-04 15:07 UTCEPSS rescoreEPSS 5.4% · 91st percentile
  70. 2026-08-04 10:35 UTCEPSS rescoreEPSS 5.4% · 91st percentile
  71. 2026-08-03 07:27 UTCOSV refresh

Frequently asked(5)

What is CVE-2022-37454?
CVE-2022-37454 is a critical-severity vulnerability; its CVE record was published on October 21, 2022. The Keccak XKCP SHA-3 reference implementation before fdc6fef has an integer overflow and resultant buffer overflow that allows attackers to execute arbitrary code or eliminate expected cryptographic properties. This occurs in the sponge function interface.
When was the CVE record for CVE-2022-37454 published?
The CVE record for CVE-2022-37454 was published on October 21, 2022. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 14, 2026; the record at its source may have been updated since.
Is CVE-2022-37454 actively exploited?
CVE-2022-37454 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.4% probability of exploitation in the next 30 days (94th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2022-37454?
CVE-2022-37454 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2022-37454?
A fix for CVE-2022-37454 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2022-37454 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-37454

Explore →

Is Your Infrastructure Affected by CVE-2022-37454?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.